NOTICE ADVISORY TO NAVSTAR USERS (NANU) #316-93270
SUBJ: PRN13 UNUSABLE 268/1225-268/1230
1. CONDITION: PRN13 (SVN9) WAS UNUSABLE ON DAY 268 (25 SEP 93)
BEGINNING 1225 UTC UNTIL DAY 268 AT 1230 UTC.
2. USERS OF GPS ARE CAUTIONED THAT THE SYSTEM IS NOT YET FULLY
OPERATIONAL. SIGNAL AVAILABILITY AND ACCURACY ARE SUBJECT TO CHANGE
DUE TO AN INCOMPLETE CONSTELLATION AND OPERATIONAL TEST ACTIVITIES.
3. POC: CAPT THOMPSON AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.